
Growing Degree Days Tracker
GDD & Bloom Timing (GTS)
$2.99 · In‑App Purchases · Designed for iPad
Grassland Temperature Sum App – GTS & GDD Bloom Tracker
The Grassland Temperature Sum (GTS) is a temperature-based indicator used to track seasonal development and blooming phases.
It follows the same principle as Growing Degree Days (GDD), widely used in the US, and is especially well suited for early spring phenology.
This app helps farmers, gardeners, beekeepers, and homesteaders understand when nature actually starts — based on accumulated heat, not calendar dates.
With Grassland Temperature Sum, you can monitor temperature sums, track blooming progress, and compare seasonal development across multiple locations.
Key Features
• Automatic Location Detection
Uses your location and regional weather data for accurate calculations.
• Daily Updated Temperature Sums (GTS / GDD-based)
Daily mean temperatures are accumulated from the beginning of the year.
GTS is optimized for phenological development; GDD follows the standard growing degree day concept.
• Bloom Calendar with Progress Indicator
See which plants are currently blooming, about to bloom, or not yet active — ideal for tracking forage and nectar availability.
• Monitor Multiple Locations
• 1 location free
• Up to 3 locations with annual subscription
• Up to 10 locations with extended subscription
Perfect for farms, apiaries, gardens, and homesteads.
Why Temperature Sums Matter
Temperature sums like GTS and GDD help assess how far the season has progressed:
• Early, cold years develop slowly
• Mild winters and warm springs advance bloom timing
• Bloom and forage availability depend on accumulated heat, not dates
Who Is This App For?
• Farmers – Plan fertilization and field work based on temperature sums
• Gardeners & Homesteaders – Time planting and seasonal tasks more reliably
• Beekeepers – Track bloom timing of important nectar and pollen plants
• Researchers & Consultants – Use temperature-based indicators for analysis
Grassland Temperature Sum gives you a clear, location-based view of seasonal development — using GTS and GDD principles to help you make better timing decisions.
Terms and conditions:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
New: GDD (Growing Degree Days) tracking alongside GTS for clearer bloom timing.
For existing users (who already used the app last year), the chart now also shows a subtle previous-year line.
The developer, Bernhard Hering, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Bernhard Hering
- Size
- 2.4 MB
- Category
- Weather
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 11.2 or later.
- Languages
English and 4 more
- English, French, German, Italian, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- bis zu drei Standorte $1.99
- Bis zu zehn Standorte $6.99
- Copyright
- © Bernhard Hering
